Pedrinho, Denise Renata, José Antonio Maior Bono, Juliane Ludwig, Vinicius Romeiro Martinez, and Marcus Rodrigo de Faria. 2015. “Cultivation of Lettuce Fertilized With Controlled-Release Nitrogen Fertilizer and Urea”. Bioscience Journal 31 (4). Uberlândia, MG:997-1003. https://doi.org/10.14393/BJ-v31n4a2015-26122.